Small Business Owner Tax Calculator Australia
Estimate what you could get back as a small business owner in Australia. Applies Australia marginal rates including state tax and the Medicare levy. Free, and no sign-up.
What small business owners can claim in Australia
- Employee wages and superannuation
- Rent for business premises
- Business insurance premiums
- Trading stock purchases
- Decline in value of business assets
- Instant asset write-off
- Business loan interest
- Advertising and marketing costs
- Accounting and bookkeeping fees
- Utilities and business phone
- Motor vehicle running costs
- Repairs and maintenance
- Licences and registration fees
- Bad debts written off
- Cost of managing tax affairs
In Australia, employees and sole traders can claim work-related expenses they paid themselves, weren't reimbursed for, and that directly relate to earning their income - apportioned for any private use and substantiated with records (a logbook for car expenses, and receipts once total work expense claims exceed $300).
You can only claim the work-related portion, you must have spent the money yourself without reimbursement, and you need a record to prove it.
Frequently asked questions
What can a small business owner claim on tax in Australia?
Commonly claimed deductions include employee wages and superannuation, rent for business premises, business insurance premiums, trading stock purchases. In Australia, employees and sole traders can claim work-related expenses they paid themselves, weren't reimbursed for, and that directly relate to earning their income - apportioned for any private use and substantiated with records (a logbook for car expenses, and receipts once total work expense claims exceed $300).
How much tax does a small business owner pay in Australia?
It depends on your income and your state. The calculator applies Australia marginal rates including state tax and the Medicare levy.
Do I need to sign up to use this calculator?
No. This calculator is completely free and requires no account. Nothing you enter is saved.
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- The $1,000 No-Receipts Deduction: Is It Right for You?
- Work From Home Tax Deductions 2025: The Complete Guide
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Estimate only — not tax advice. Confirm with the ATO or a registered tax professional.